论文标题
应变不兼容，是焊接和添加剂制造中残留应力的来源
Strain incompatibility as a source of residual stress in welding and additive manufacturing
论文作者
论文摘要
焊接过程中残留应力的积累和添加剂制造是一个重要的效果，可以显着预测工件故障。在这项工作中，我们利用1.5D模型的物理和分析透明度表明，热膨胀材料沉积到弹性底物上会导致应变不相容性的积累。该领域是系统中残留应力的来源，即使在没有塑性变形的情况下，也引入了建筑历史记录的记忆。然后，将模型应用于描述沉积过程中残留应力的发作和进展，它们在冷却时的演变以及移动热源的速度所起的基本作用。
The accumulation of residual stress during welding and additive manufacturing is an important effect that can significantly anticipate the workpiece failure. In this work we exploit the physical and analytical transparency of a 1.5D model to show that the deposition of thermally expanded material onto an elastic substrate leads to the accumulation of strain incompatibility. This field, which is the source of residual stress in the system, introduces memory of the construction history even in the absence of plastic deformations. The model is then applied to describe the onset and the progression of residual stresses during deposition, their evolution upon cooling, and the fundamental role played by the velocity of the moving heat source.
